180020120122 has 4 divisors (see below), whose sum is σ = 270030180186. Its totient is φ = 90010060060.

The previous prime is 180020120107. The next prime is 180020120129. The reversal of 180020120122 is 221021020081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 142801607881 + 37218512241 = 377891^2 + 192921^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 180020120122.

It is not an unprimeable number, because it can be changed into a prime (180020120129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45005030029 + ... + 45005030032.

Almost surely, 2^180020120122 is an apocalyptic number.

180020120122 is a deficient number, since it is larger than the sum of its proper divisors (90010060064).

180020120122 is an equidigital number, since it uses as much as digits as its factorization.

180020120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90010060063.

The product of its (nonzero) digits is 128, while the sum is 19.

The spelling of 180020120122 in words is "one hundred eighty billion, twenty million, one hundred twenty thousand, one hundred twenty-two".